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ZA and ZB connections ?

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  • undefined
    Rudy2A
    last edited by 4 Jan 2020, 16:25

    Happy New Year everyone !

    I spoke too quickly ... I realized that when I wanted to print large pieces the leveling of the bed did not work finally!

    While searching the forum, I found a case very close to mine, but unfortunately that has apparently not been resolved!

    https://forum.duet3d.com/topic/725/still-having-problems-with-bed-compensation-with-the-dc42-probe?_=1578077431668

    However, I would point out that before my mini IR probe, I had a BLTouch and the problem was the same!

    Thank you.

    undefined 1 Reply Last reply 4 Jan 2020, 22:49 Reply Quote 0
    • undefined
      dc42 administrators @Rudy2A
      last edited by 4 Jan 2020, 22:49

      @Rudy2A said in ZA and ZB connections ?:

      I spoke too quickly ... I realized that when I wanted to print large pieces the leveling of the bed did not work finally!

      Are you now using G32 to level the two sides of the bed, with the two Z motors connected to separate drivers? If so, after running G32, do you then get a level height map if you run G29 S0 ?

      Duet WiFi hardware designer and firmware engineer
      Please do not ask me for Duet support via PM or email, use the forum
      http://www.escher3d.com, https://miscsolutions.wordpress.com

      undefined 2 Replies Last reply 4 Jan 2020, 22:50 Reply Quote 0
      • undefined
        Rudy2A @dc42
        last edited by 4 Jan 2020, 22:50

        @dc42 said in ZA and ZB connections ?:

        Utilisez-vous maintenant G32 pour niveler les deux côtés du lit, avec les deux moteurs Z connectés à des pilotes séparés? Si oui, après avoir exécuté G32, obtenez-vous une carte de hauteur de niveau si vous exécutez G29 S0?

        Need details ...

        Capture d’écran 2020-01-04 à 23.37.52.png

        When I look at my height map, I see that the corner in front on the left (near the arrows XYZ) is too high! So, if I understood correctly, I must lower my bed on this side using the adjusting screw. However if I look at my test print which is in the same place, the deposit of the PLA is too high and does not really stick to 100% on my bed, which could indicate that I should assemble my bed!
        What does the grid (reference model) represent perfectly straight on my height map and what does the green part (for me) represent?

        1 Reply Last reply Reply Quote 0
        • undefined
          Rudy2A @dc42
          last edited by 4 Jan 2020, 23:06

          @dc42 said in ZA and ZB connections ?:

          Are you now using G32 to level the two sides of the bed, with the two Z motors connected to separate drivers? If so, after running G32, do you then get a level height map if you run G29 S0 ?

          Yes absolutely, I use the two separate Z pilots ... G32 then G29 ...

          But the problem is that, even if I adjust my bed in any way after doing G32 and G29, the result remains the same! It is as if the correction of my bed keeps in mind the error of the departure! Difficult to explain ! But, I find myself after the correction with the same faults (in the same place as at the start) without any correction having been made and yet I see perfectly moving the Z differently.

          undefined 1 Reply Last reply 4 Jan 2020, 23:14 Reply Quote 0
          • undefined
            Phaedrux Moderator @Rudy2A
            last edited by 4 Jan 2020, 23:14

            @Rudy2A your mesh would benefit from more points. It's fairly sparse.

            Z-Bot CoreXY Build | Thingiverse Profile

            undefined 1 Reply Last reply 4 Jan 2020, 23:21 Reply Quote 0
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              Rudy2A @Phaedrux
              last edited by 4 Jan 2020, 23:21

              @Phaedrux said in ZA and ZB connections ?:

              votre maillage bénéficierait de plus de points. C'est assez clairsemé.

              For the sake of understanding, I prefer to use the P of M557 than S
              M557 X11: 250 Y11: 252 P4
              What would be the P value to make it more meaningful?

              undefined 1 Reply Last reply 4 Jan 2020, 23:22 Reply Quote 0
              • undefined
                Rudy2A @Rudy2A
                last edited by 4 Jan 2020, 23:22

                @Rudy2A said in ZA and ZB connections ?:

                votre maillage bénéficierait de plus de points. C'est assez clairsemé.

                Par souci de compréhension, je préfère utiliser le P de M557 que S
                M557 X11: 250 Y11: 252 P4
                Quelle serait la valeur P pour la rendre plus significative?

                My bed is 300X300

                1 Reply Last reply Reply Quote 0
                • undefined
                  Phaedrux Moderator
                  last edited by 4 Jan 2020, 23:23

                  Try double?

                  Z-Bot CoreXY Build | Thingiverse Profile

                  undefined 1 Reply Last reply 4 Jan 2020, 23:59 Reply Quote 0
                  • undefined
                    Rudy2A @Phaedrux
                    last edited by 4 Jan 2020, 23:59

                    @Phaedrux said in ZA and ZB connections ?:

                    Essayez double?

                    Here, I get this result from M557 P4 to P8 ...

                    Capture d’écran 2020-01-05 à 00.52.12.png

                    The worst part is that by looking for solutions to my problem on the forum, I found quite a few cases similar to mine, but each time, the cases were not resolved or were not commented on final solution, it's a shame!

                    undefined 1 Reply Last reply 5 Jan 2020, 00:11 Reply Quote 0
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                      Rudy2A @Rudy2A
                      last edited by 5 Jan 2020, 00:11

                      As I said a little higher ... No matter the result of my height map by making a G29S0! My first layer does not receive any correction, the impression always remains identical in all the tests (and yet the height maps are never identical) ... same defect in the same place, it is frankly annoying not to understand!

                      undefined 1 Reply Last reply 5 Jan 2020, 09:25 Reply Quote 0
                      • undefined
                        DIY-O-Sphere
                        last edited by 5 Jan 2020, 00:20

                        How are the motors connected to the leadscrews? Can you please attach a picture?

                        (UTC+1)

                        undefined 1 Reply Last reply 5 Jan 2020, 00:56 Reply Quote 0
                        • undefined
                          Rudy2A @DIY-O-Sphere
                          last edited by 5 Jan 2020, 00:56

                          @DIY-O-Sphere said in ZA and ZB connections ?:

                          Comment les moteurs sont-ils connectés aux vis-mères? Pouvez-vous joindre une photo?

                          Like this...

                          IMG_0230.JPG

                          undefined 1 Reply Last reply 5 Jan 2020, 09:41 Reply Quote 0
                          • undefined
                            Phaedrux Moderator
                            last edited by 5 Jan 2020, 03:00

                            Do you see the Z axis turning while it's printing?

                            Z-Bot CoreXY Build | Thingiverse Profile

                            undefined 1 Reply Last reply 5 Jan 2020, 09:13 Reply Quote 0
                            • undefined
                              Rudy2A @Phaedrux
                              last edited by 5 Jan 2020, 09:13

                              @Phaedrux said in ZA and ZB connections ?:

                              Voyez-vous l'axe Z tourner pendant l'impression?

                              Yes absolutely, my CoreXY printer (it's my moving bed) has 2 Z axes. One Z on Za and the other on E1, I can see my Z axes turning indifferently during my print tests ...

                              1 Reply Last reply Reply Quote 0
                              • undefined
                                Veti @Rudy2A
                                last edited by 5 Jan 2020, 09:25

                                @Rudy2A said in ZA and ZB connections ?:

                                As I said a little higher ... No matter the result of my height map by making a G29S0! My first layer does not receive any correction, the impression always remains identical in all the tests (and yet the height maps are never identical) ... same defect in the same place, it is frankly annoying not to understand!

                                can you post a picture of the first layer?

                                undefined 1 Reply Last reply 5 Jan 2020, 10:47 Reply Quote 0
                                • undefined
                                  DIY-O-Sphere @Rudy2A
                                  last edited by DIY-O-Sphere 1 May 2020, 09:41 5 Jan 2020, 09:41

                                  @Rudy2A
                                  I hate those types of couplers, as they behave like a spring.
                                  But I think that in your case, the lead screw is fixed in Z by the upper bearing.

                                  d2982f35-76fa-4838-b1d2-2f03f8f1a946-grafik.png

                                  (UTC+1)

                                  1 Reply Last reply Reply Quote 0
                                  • undefined
                                    Rudy2A @Veti
                                    last edited by 5 Jan 2020, 10:47

                                    @Veti said in ZA and ZB connections ?:

                                    pouvez-vous publier une photo de la première couche?

                                    here is... the quality of the photography is not great, but we can clearly see where my first layer is crushed, and where it is too high!

                                    Whatever I do as a setting, it comes down to the same every time! it's like a model is in memory on the printer ...

                                    Even if I level my bed using the adjustment screws with a print in progress, I manage to have a very appreciable result ... Only, when I launch a new print test (without restarting the printer) my settings are not taken into account and we start again on a leveling of the bed almost identical to the photograph above!

                                    IMG_0232.jpg

                                    IMG_0234.jpg

                                    undefined 1 Reply Last reply 5 Jan 2020, 11:26 Reply Quote 0
                                    • undefined
                                      Veti @Rudy2A
                                      last edited by 5 Jan 2020, 11:26

                                      @Rudy2A
                                      post the picture of the mesh grid.
                                      while printing check with m122 that mesh grid is active.

                                      undefined 1 Reply Last reply 5 Jan 2020, 11:29 Reply Quote 0
                                      • undefined
                                        Rudy2A @Veti
                                        last edited by 5 Jan 2020, 11:29

                                        @Veti said in ZA and ZB connections ?:

                                        poster l'image de la grille maillée.
                                        lors de l'impression, vérifiez avec m122 que la grille de maillage est active

                                        Here is...

                                        Capture d’écran 2020-01-05 à 12.28.39.png

                                        undefined 1 Reply Last reply 5 Jan 2020, 11:47 Reply Quote 0
                                        • undefined
                                          Veti
                                          last edited by 5 Jan 2020, 11:32

                                          for a glass surface, that looks absutly terrible. there might be a problem with your probe.

                                          please run this macro.
                                          https://forum.duet3d.com/topic/6962/m48-measure-z-probe-repeatability-and-print-to-serial-output

                                          undefined 1 Reply Last reply 5 Jan 2020, 12:46 Reply Quote 0
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